ADUM1400ARWZ-RL7 - Quad Digital Isolator 1Mbps | Analog Devices
MPN： ADUM1400ARWZ-RL7 ✓ 啟用中ADUM1400ARWZ-RL7 概覽
Digital isolators are components that transmit digital signals across an isolation barrier, providing galvanic isolation to protect sensitive circuitry from high voltages, ground loops, and noise. They are essential in industrial automation, medical equipment, and communication systems where safety and signal integrity are paramount. Unlike optocouplers, iCoupler digital isolators use monolithic air core transformers and high-speed CMOS, offering superior performance, reliability, and integration.
Key features of the ADUM1400ARWZ-RL7 include its 4/0 channel directionality (all channels forward), 1 Mbps data rate, 25 kV/µs CMTI, and low power consumption. The device supports a wide temperature range of -40°C to +105°C and is RoHS compliant. Its iCoupler technology eliminates the need for external components like LEDs and photodiodes, simplifying design and improving long-term stability.
Technically, the ADUM1400ARWZ-RL7 integrates a high-speed CMOS interface with monolithic transformers, achieving isolation ratings up to 2500 Vrms. The device provides excellent noise immunity and low propagation delay, making it suitable for isolating SPI, UART, and other digital interfaces. Its bidirectional capability (in other variants) and multiple channel configurations offer design flexibility.
Typical applications include industrial fieldbus isolation, isolated SPI/UART interfaces, motor control, and power supply monitoring. The device is also used in medical devices where patient safety requires galvanic isolation. Its compact SOIC-16 package and low power consumption make it ideal for space-constrained designs.
When designing with this device, ensure proper PCB layout with adequate creepage and clearance distances to maintain isolation ratings. Decouple both supply rails with 0.1 µF capacitors close to the pins. The device does not require external components for isolation, but careful attention to ground plane separation is recommended.
直接替換替代品，適用於 ADUM1400ARWZ-RL7 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： ADUM1400ARWZ-RL7 （相同外形與佔位） — 差異在於 Data Rate, Common-Mode Transient Immunity (CMTI), Operating Temperature Range, Channel Directionality.
ADUM1400ARWZ
✅ 直接替換聯絡詢價
查看資料表 →ADUM1400BRWZ
✅ 直接替換📋 參考替代品（不在目錄中）
ADUM1400CRWZ
✅ 直接替換📋 參考替代品（不在目錄中）
ADUM1401ARWZ
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →ADUM1402ARWZ
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
ISO7221
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
SI8620
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
ADUM1400ARWZ-RL7 規格
| Number of Channels | 4 |
| Channel Directionality | 4/0 (unidirectional) |
| Isolation Voltage | 2500 Vrms |
| 資料速率 | 1 Mbps |
| Common-Mode Transient Immunity (CMTI) | 25 kV/µs |
| Supply Voltage (Side 1) | 2.7 V to 5.5 V |
| Supply Voltage (Side 2) | 2.7 V to 5.5 V |
| 工作溫度範圍 | -40°C to +105°C |
| 封裝 | 16-SOIC (0.295", 7.50mm Width) |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
| Technology | iCoupler |
| 腳位數 | 16 |
ADUM1400ARWZ-RL7 腳位配置
| 腳位 1 | VDD1 — Supply voltage side 1 |
| 腳位 2 | GND1 — Ground side 1 |
| 腳位 3 | VIA — Input channel A |
| 腳位 4 | VIB — Input channel B |
| 腳位 5 | VIC — Input channel C |
| 腳位 6 | VID — Input channel D |
| 腳位 7 | NC — No connect |
| 腳位 8 | NC — No connect |
| 腳位 9 | NC — No connect |
| 腳位 10 | VOD — Output channel D |
| 腳位 11 | VOC — Output channel C |
| 腳位 12 | VOB — Output channel B |
| 腳位 13 | VOA — Output channel A |
| 腳位 14 | GND2 — Ground side 2 |
| 腳位 15 | VDD2 — Supply voltage side 2 |
| 腳位 16 | NC — No connect |
典型應用
ADUM1400ARWZ-RL7 適用於 6 應用s: Industrial Fieldbus Isolation, Isolated SPI/UART Interface, Motor Control Isolation, Medical Device Isolation, Power Supply Monitoring, Isolated Sensor Interface.
Industrial Fieldbus Isolation
The ADUM1400ARWZ-RL7 provides galvanic isolation for industrial fieldbus interfaces like RS-485 and CAN. Its 2500 Vrms isolation and 25 kV/µs CMTI protect against ground loops and voltage transients in factory automation. The 1 Mbps data rate is sufficient for most fieldbus protocols, and the 4 unidirectional channels can isolate TX, RX, and control signals. The wide supply range (2.7V-5.5V) allows interfacing with 3.3V or 5V logic. Its low power consumption and compact SOIC-16 package make it ideal for space-constrained PLC modules.
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Isolated SPI/UART Interface
The ADUM1400ARWZ-RL7 is well-suited for isolating SPI or UART interfaces between microcontrollers and peripherals. Its 4 unidirectional channels can carry MOSI, MISO, SCK, and CS signals, or TX, RX, and control lines. The 1 Mbps data rate supports standard SPI clock speeds and UART baud rates. The high CMTI ensures reliable communication in noisy environments. The device's low propagation delay and pulse width distortion maintain signal integrity. It operates from 2.7V to 5.5V, enabling level shifting between different logic domains.
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Motor Control Isolation
In motor control systems, the ADUM1400ARWZ-RL7 isolates the microcontroller from high-voltage gate drivers and power stages. Its 2500 Vrms isolation protects low-voltage logic from motor supply transients. The 1 Mbps data rate is adequate for PWM control signals and feedback. The high CMTI (25 kV/µs) prevents false triggering during switching events. The device's wide temperature range (-40°C to +105°C) suits industrial motor drives. Its 4 channels can isolate PWM, enable, and fault signals.
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Medical Device Isolation
The ADUM1400ARWZ-RL7 provides patient isolation in medical devices, meeting safety standards for galvanic isolation. Its 2500 Vrms rating ensures protection against leakage currents. The 1 Mbps data rate is sufficient for monitoring signals like ECG or SpO2. The device's low power consumption is critical for battery-powered devices. The compact SOIC-16 package fits portable designs. Its high reliability and long-term stability make it suitable for life-critical applications.
推薦
Power Supply Monitoring
The ADUM1400ARWZ-RL7 isolates digital monitoring signals from power supply rails. It can transmit status signals like power-good, fault, and enable across the isolation barrier. The 2500 Vrms isolation protects monitoring circuitry from high voltages. The 1 Mbps data rate is adequate for status updates. The device's wide supply range allows operation from the monitored rail or a separate logic supply. Its low power consumption minimizes load on the monitored supply.
推薦
Isolated Sensor Interface
The ADUM1400ARWZ-RL7 isolates digital sensor outputs from the main controller, preventing ground loops and noise. It can transmit data from temperature, pressure, or proximity sensors. The 1 Mbps data rate supports most sensor communication protocols. The high CMTI ensures reliable data transfer in industrial environments. The device's 4 channels can carry data, clock, and control signals. Its wide temperature range suits harsh environments.
推薦
推薦產品摘要
工程參考資料，適用於 ADUM1400ARWZ-RL7 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | ADUM1400ARWZ | ADUM1400BRWZ | ADUM1400CRWZ | ADUM1401ARWZ | ADUM1402ARWZ | ISO7221 | SI8620 |
|---|---|---|---|---|---|---|---|---|
| Package | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (same) | 16-SOIC (same) | 16-SOIC (same) | 16-SOIC (same) | 16-SOIC (same) | 16-SOIC (same) | 16-SOIC (same) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments | Silicon Labs |
| Number of Channels | 4 | 4 | 4 | 4 | 4 | 4 | 2 | 2 |
| Data Rate | 1 Mbps | 1 Mbps | 10 Mbps | 90 Mbps | 1 Mbps | 1 Mbps | 150 Mbps | 150 Mbps |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms |
| CMTI | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 35 kV/µs |
| Supply Voltage Range | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 3.0V to 5.5V | 2.5V to 5.5V |
| Operating Temperature | -40°C to +105°C | -40°C to +105°C | -40°C to +105°C | -40°C to +105°C | -40°C to +105°C | -40°C to +105°C | -40°C to +125°C | -40°C to +125°C |
主要差異化特點
- 4 unidirectional channels in a single package (對比ISO7221)
- iCoupler technology with monolithic transformers (對比SI8620)
- Wide supply range (2.7V to 5.5V) (對比ISO7221)
設計說明
For optimal isolation performance, maintain at least 8mm creepage and clearance distances between the input and output sides on the PCB. Use a solid ground plane under each side, but do not connect the grounds together except through the isolator. Place 0.1µF decoupling capacitors close to VDD1 and VDD2 pins to filter high-frequency noise.
The ADUM1400ARWZ-RL7 requires both VDD1 and VDD2 to be powered. Ensure each supply is within 2.7V to 5.5V. The device consumes low power, but decoupling is essential to maintain signal integrity. Use a 10µF bulk capacitor in addition to 0.1µF ceramic on each supply rail if the power source is far from the device.
Do not exceed the absolute maximum ratings, including isolation voltage and supply voltage. Ensure the input signals do not exceed the supply voltage. Avoid floating input pins; tie unused inputs to GND or VDD. Verify that the data rate does not exceed 1 Mbps to prevent data corruption.
合規資訊
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified.